From: Robert Dober <robert.dober@...>
Date: 2006-05-24T04:53:14+09:00
Subject: Re: Regexp help: Matching HTML having trouble w/greediness

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On 5/23/06, Wes Gamble <weyus@att.net> wrote:
>
> Wes Gamble wrote:
> > All,
> >
> > I am attempting to do some matching on some HTML.
> >
> > Here's what I want:
> >
> > I want to be able to match any <area> tag which is of the form <area
> > ...> that does NOT contain a "mailto:" href.  The grouping is for some
> > substitution that I'm doing.
> >
> > Here's my pattern:
> >
> > /(<area .*?href=3D['|"])(?!mailto:)(.*?)(['|"].*?>)/mi
> >
> > What I find is that this pattern will successfully handle most area
> > tags, however, when an area tag is followed by a <a> tag (which also ha=
s
> > a href attribute, it will match everything between <area and the end of
> > the <a> tag).  So, for example,
> >
> > <area href=3D"mailto: xyz@abc.com>other stuff, including tags<a
> > href=3D"blah">
> >
> > this pattern matches all the way through the end of the <a> tag.
> >
> > I tried to stick a negative lookahead (?!<) at the end of the pattern
> > but that doesn't seem to help.
> >
> > How do I get this pattern to STOP matching?
> >
> > Thanks for any help,
> > Wes
>
>
> This appears to work better:
>
> /(<area [^>]*?)(href=3D['|"])(?!mailto:)(.*?)(['|"].*?>)/mi
>
> The "any character but '>'" seems to stop the evaluation of the match
> from making it any further than the end of the <area> tag.
>
> Wes
>
> --
> Posted via http://www.ruby-forum.com/.
>
>
So I was just typing and typing and typing...
Glad Ur happy with it.
Robert


--=20
Deux choses sont infinies : l'univers et la b=EAtise humaine ; en ce qui
concerne l'univers, je n'en ai pas acquis la certitude absolue.

- Albert Einstein

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